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$60+ Cheap flights from Illinois to California

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LAX
Apr 5 — Apr 121
Sat 4/5
Sat 4/12
1 adult, Economy
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Cheap flight deals from Illinois to California

Keep the following information in mind while searching for Illinois to California flight deals. Data was last updated March 31, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$112
(Expedia)

One-way from

$60
(FlightHub)

Popular in

December

Cheapest in

September

Average price

$359

Good round-trip deal

$257 or less

Good one-way deal

$126 or less
Provider with most accurate pricing for Chicago (CHI)-Los Angeles flight deals.
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From Illinois to California
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One-way flight from Illinois to California
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Highest demand for flights based on searches. 6% potential increase in price ($19 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Price to beat on a round-trip flight from Illinois to California.
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Price to beat on a one-way flight from Illinois to California.
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Find flight deals from Illinois to California

Cheapest flights from Illinois to California
Explore the most affordable flight options available from Illinois to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 31, 2025.

This Expedia deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/129:02 pmORD - LAS
Nonstop4h 05mSpirit Airlines
Fri 5/1611:46 pmLAS - ORD
Nonstop3h 39mSpirit Airlines
Deal found 3/30$112
This Cheapflightsfares deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/289:55 pmSTL - LAS
Nonstop3h 44mFrontier
Fri 5/23:39 pmLAS - STL
Nonstop3h 26mFrontier
Deal found 3/30$122
This Kiwi.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/197:46 pmORD - LAS
Nonstop4h 31mMultiple Airlines
Wed 4/238:45 pmLAS - ORD
1 stop7h 00mMultiple Airlines
Deal found 3/31$124
This CheapOair deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/276:15 amMDW - LAS
Nonstop4h 03mFrontier
Fri 5/29:13 amLAS - MDW
Nonstop3h 35mFrontier
Deal found 3/31$140
This Mytrip deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2310:26 pmORD - LAX
Nonstop4h 45mSpirit Airlines
Mon 4/2811:48 pmLAX - ORD
1 stop10h 59mSpirit Airlines
Deal found 3/30$143
This Cheapflightsfares deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/277:12 pmORD - BUR
1 stop13h 58mSpirit Airlines
Wed 4/306:10 pmBUR - ORD
1 stop10h 23mSpirit Airlines
Deal found 3/30$147
This Cheapflightsfares deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/18:14 pmORD - LAS
Nonstop4h 16mFrontier
Mon 5/511:25 pmLAS - ORD
Nonstop3h 45mFrontier
Deal found 3/30$156
This Booking.com deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/59:55 pmSTL - LAS
Nonstop3h 46mMultiple Airlines
Wed 5/79:24 pmLAS - STL
1 stop9h 51mMultiple Airlines
Deal found 3/30$158
This Southwest deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/295:25 pmORD - LAS
Nonstop4h 05mSouthwest
Sat 5/35:55 pmLAS - ORD
Nonstop3h 45mSouthwest
Deal found 3/30$159
This Southwest deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/297:30 amMDW - LAS
Nonstop3h 55mSouthwest
Tue 5/68:25 amLAS - MDW
Nonstop3h 30mSouthwest
Deal found 3/30$159
This Kiwi.com deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/219:02 pmORD - LAX
1 stop11h 49mMultiple Airlines
Sat 5/244:46 pmLAX - ORD
Nonstop4h 19mMultiple Airlines
Deal found 3/30$162
This American Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/266:45 pmORD - LAS
Nonstop4h 13mAmerican Airlines
Wed 4/3011:44 pmLAS - ORD
Nonstop3h 38mAmerican Airlines
Deal found 3/31$171

Cheapflights Fare Finder

Customize your flight search to find flights from Illinois to California that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 31, 2025.
Use the filters below to find and compare flights from Illinois to California that are best for you.

Fly from

Illinois

Fly to

California

Route

Depart

Return

Price

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Mon 5/12

9:02 pm-11:07 pm

Nonstop4h 05m

Las Vegas Harry Reid Intl

Fri 5/16

11:46 pm-5:25 am

Nonstop3h 39m

$112

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Mon 4/28

9:55 pm-11:39 pm

Nonstop3h 44m

Las Vegas Harry Reid Intl

Fri 5/2

3:39 pm-9:05 pm

Nonstop3h 26m

$122

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Sat 4/19

7:46 pm-10:17 pm

Nonstop4h 31m

Las Vegas Harry Reid Intl

Wed 4/23

8:45 pm-5:45 am

1 stop7h 00m

$124

ChicagoLas Vegas

MDW - LAS

MDWLAS

Chicago Midway

Sun 4/27

6:15 am-8:18 am

Nonstop4h 03m

Las Vegas Harry Reid Intl

Fri 5/2

9:13 am-2:48 pm

Nonstop3h 35m

$140

ChicagoLos Angeles

ORD - LAX

ORDLAX

Chicago O'Hare Intl

Wed 4/23

10:26 pm-1:11 am

Nonstop4h 45m

Los Angeles

Mon 4/28

11:48 pm-12:47 pm

1 stop10h 59m

$143

ChicagoBurbank

ORD - BUR

ORDBUR

Chicago O'Hare Intl

Sun 4/27

7:12 pm-7:10 am

1 stop13h 58m

Burbank Bob Hope

Wed 4/30

6:10 pm-6:33 am

1 stop10h 23m

$147

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Thu 5/1

8:14 pm-10:30 pm

Nonstop4h 16m

Las Vegas Harry Reid Intl

Mon 5/5

11:25 pm-5:10 am

Nonstop3h 45m

$156

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Mon 5/5

9:55 pm-11:41 pm

Nonstop3h 46m

Las Vegas Harry Reid Intl

Wed 5/7

9:24 pm-9:15 am

1 stop9h 51m

$158

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Tue 4/29

5:25 pm-7:30 pm

Nonstop4h 05m

Las Vegas Harry Reid Intl

Sat 5/3

5:55 pm-11:40 pm

Nonstop3h 45m

$159

ChicagoLas Vegas

MDW - LAS

MDWLAS

Chicago Midway

Tue 4/29

7:30 am-9:25 am

Nonstop3h 55m

Las Vegas Harry Reid Intl

Tue 5/6

8:25 am-1:55 pm

Nonstop3h 30m

$159

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/30

Showing 1-10 of 60 results
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Best time to book a flight from Illinois to California

Have a flexible travel schedule? Discover the best time to fly to California from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Illinois to California

What is the cheapest month to book a flight from Illinois to California?

Currently, January is the cheapest month in which you can book a flight from Illinois to California (average of $246). Flying from Illinois to California in June is currently the most expensive (average of $328). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IL to CA?

Find hourly flight availability from Illinois to California. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 31, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to California as you normally would.

Weekly flight availability from Illinois to California

Explore weekly flight availability from Illinois to California. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated March 31, 2025.

The most flights from USIL to USCA are scheduled on a Monday (105 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (43 on average).

Rainfall in California by month

Plan your trip to California by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in California ranges from 0.0 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. July is typically the driest time to visit California when rainfall is around 0.0 in.

Temperature in California by month

Plan your trip to California by taking into account the average temperature totals by month.

If weather is an important factor for your trip to California, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).

Reviews of airlines servicing California

Get insights into the airlines that provide service to California. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to California. Reviews last updated March 31, 2025.
See what other customers who have flown with Alaska Airlines, Southwest and Delta from Illinois to California have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,818 reviews

Overall

8.0

Crew

8.5

Entertainment

7.1

Food

7.1

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,818 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Overall

8.0

Crew

8.5

Entertainment

7.1

Food

7.1

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,275 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Overall

8.0

Crew

8.5

Entertainment

7.1

Food

7.1

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,899 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Overall

8.0

Crew

8.5

Entertainment

7.1

Food

7.1

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.9
Good
2,344 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Overall

8.0

Crew

8.5

Entertainment

7.1

Food

7.1

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,614 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Overall

8.0

Crew

8.5

Entertainment

7.1

Food

7.1

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

Find useful and relevant information for your journey from Illinois to California. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Illinois to California one-way?

    For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $60. Users have also found prices from $61 and $80 on Frontier and United Airlines, respectively.

  • Can I find deals for flights from Illinois to California that include hotel bookings?

    Yes. In addition to deals on Illinois to California flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to California?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to California.

  • Can I find deals for business class flights from Illinois to California?

    Yes. Cheapflights offers flight deals from Illinois to California by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to California?

    Currently, January is the cheapest month in which you can book a flight from Illinois to California (average of $246). Flying from Illinois to California in June is currently the most expensive (average of $328). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Illinois to California

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Illinois to California

Discover the top 10 airlines that operate flights from Illinois to California. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$54Average$161FlexibilityNo cancel feeOn-time88%
FrontierCheapest$78Average$200FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$89Average$237FlexibilityNo cancel feeOn-time65%
DeltaCheapest$128Average$408FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$137Average$473FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$140Average$447FlexibilityNo cancel feeOn-time75%
Hawaiian AirlinesCheapest$144Average$303FlexibilityNo cancel feeOn-time85%
Sun Country AirCheapest$147Average$345FlexibilityNo cancel feeOn-time83%
SouthwestCheapest$152Average$452FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$180Average$491FlexibilityNo cancel feeOn-time71%
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